wannacry | 808c1ca5e82fde0f9462c8ac8dd1119bb929ca8a249dbc30dc7e9ee3119e2270

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 01:37

Target

e0ca3d509c7caf4f28c094c447e929f8.dll
Size

5.0MB
MD5

e0ca3d509c7caf4f28c094c447e929f8
SHA1

364f26073103965c3c0fecf897e23e0b1c95dcfd
SHA256

808c1ca5e82fde0f9462c8ac8dd1119bb929ca8a249dbc30dc7e9ee3119e2270
SHA512

fba924ca55c06511c2623f338071345371858ea83064fd11e9bb8999409a072384f5f9e9f02d00cd44c806e98979b8a2d2dc03660f494bd3d61a8f49c2f3afcf

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3271) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 2 IoCs

Processes:

mssecsvr.exemssecsvr.exe

pid process

3984 mssecsvr.exe
2716 mssecsvr.exe
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Drops file in Windows directory 2 IoCs

Processes:

mssecsvr.exerundll32.exe

description ioc process

File created C:\WINDOWS\tasksche.exe mssecsvr.exe
File created C:\WINDOWS\mssecsvr.exe rundll32.exe

pid	process
3984	mssecsvr.exe
2716	mssecsvr.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvr.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4692 wrote to memory of 1848	4692	rundll32.exe	rundll32.exe
PID 4692 wrote to memory of 1848	4692	rundll32.exe	rundll32.exe
PID 4692 wrote to memory of 1848	4692	rundll32.exe	rundll32.exe
PID 1848 wrote to memory of 3984	1848	rundll32.exe	mssecsvr.exe
PID 1848 wrote to memory of 3984	1848	rundll32.exe	mssecsvr.exe
PID 1848 wrote to memory of 3984	1848	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e0ca3d509c7caf4f28c094c447e929f8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4692

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
72e4f09a609dddef3af6d1a01dfd2b6f

SHA1
2e3885637ab40fb64674caa809e45972c223ef28

SHA256
45c3c29b369642dbdd7d997df90e4e38b0dd80990405ed07142706ba4244f024

SHA512
aa09cbd89fb74cc942017cedaa8fe6dc7dd09ffa656f2fa24dee871fa7b20915eca7cedd6deb918a61555a4b0a398be77d10717e653188df0b2af851710be17c

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
72e4f09a609dddef3af6d1a01dfd2b6f

SHA1
2e3885637ab40fb64674caa809e45972c223ef28

SHA256
45c3c29b369642dbdd7d997df90e4e38b0dd80990405ed07142706ba4244f024

SHA512
aa09cbd89fb74cc942017cedaa8fe6dc7dd09ffa656f2fa24dee871fa7b20915eca7cedd6deb918a61555a4b0a398be77d10717e653188df0b2af851710be17c

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
72e4f09a609dddef3af6d1a01dfd2b6f

SHA1
2e3885637ab40fb64674caa809e45972c223ef28

SHA256
45c3c29b369642dbdd7d997df90e4e38b0dd80990405ed07142706ba4244f024

SHA512
aa09cbd89fb74cc942017cedaa8fe6dc7dd09ffa656f2fa24dee871fa7b20915eca7cedd6deb918a61555a4b0a398be77d10717e653188df0b2af851710be17c

Download Submit
memory/1848-130-0x0000000000000000-mapping.dmp

Download
memory/3984-131-0x0000000000000000-mapping.dmp

Download